Anilox roller gluing and coating equipment

Abstract

The utility model discloses anilox roller gluing and coating equipment which comprises an anilox roller and a pressing roller, the pressing roller is used for pressing a carrier film on the anilox roller, and a scraper is arranged on the side, away from the pressing roller, of the anilox roller. According to the anilox roller gluing and coating equipment provided by the utility model, the scraper glue storage groove is formed between the scraper and the anilox roller, and an adhesive is stored in the scraper glue storage groove, so that the minimum coating amount required by a material groove can be reduced, and the viscosity of the adhesive can be controlled more stably. The prepared material liquid directly flows to the glue storage tank of the scraper, and meanwhile, the redundant adhesive material liquid overflows after passing through the two sides of the scraper, so that the glue liquid filled on the net roller is always new material liquid with stable solid content and viscosity, and the coating uniformity is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of coating equipment technology, specifically relating to an anilox roller coating equipment. Background Technology

[0002] There are many coating methods for adhesives, such as slot extrusion coating, comma blade coating, anilox coating, or gravure coating. For anilox coating, the adhesive is typically applied to a reservoir using an anilox roller. The roller's rotation causes the adhesive to rotate and be pressed onto the film, which is then scraped off with a doctor blade. However, existing coating methods, after prolonged use, cause the adhesive to remain in a turbulent state, generating numerous air bubbles. This results in inconsistent solvent evaporation in localized areas, leading to inconsistent viscosity and solids content, ultimately resulting in poor coating uniformity in certain areas. Utility Model Content

[0003] The purpose of this invention is to provide an anilox roller coating equipment to solve the problem that after long-term use, the adhesive will be in a rolling state, eventually leading to poor local coating uniformity.

[0004] Therefore, this utility model provides an anilox roller coating equipment, including: an anilox roller and a pressure roller, wherein the pressure roller is used to press the anilox roller onto the anilox roller, and a scraper is provided on the side of the anilox roller away from the pressure roller.

[0005] Preferably, a scraper glue storage groove is formed between the anilox roller and the scraper.

[0006] Preferably, the adhesive storage tank of the scraper contains adhesive.

[0007] Preferably, a collection trough is provided below the glue storage trough of the scraper.

[0008] Preferably, it also includes a plurality of guide rollers, which are used to guide the motion of the anilox roller.

[0009] Preferably, a homogenizing device is provided above the anilox roller.

[0010] Preferably, the homogenizing device is a metal comma knife.

[0011] Preferably, the anilox roller and the pressure roller are on the same horizontal plane.

[0012] Preferably, the anilox roller is provided with a uniformly distributed grid.

[0013] Preferably, the mesh number of the anilox roller is in the range of 20-300 mesh.

[0014] Beneficial effects:

[0015] 1. This utility model provides an anilox roller coating equipment. A doctor blade adhesive storage tank is formed between the doctor blade and the anilox roller, storing the adhesive in the tank. This reduces the minimum amount of adhesive required for coating and allows for more stable viscosity control of the adhesive. The prepared adhesive solution flows directly into the doctor blade adhesive storage tank, while excess adhesive solution overflows through both sides of the doctor blade. This ensures that the adhesive solution filling the anilox roller is always a fresh solution with stable solid content and viscosity, guaranteeing uniform coating.

[0016] 2. In this utility model, the mesh pattern on the coated surface is smoothed by a homogenizing device, making the coated surface smoother and more mirror-like. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A cross-sectional view of Embodiment 1 of the anilox roller coating equipment provided by this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of an embodiment 1 of the anilox roller coating equipment provided by this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of textured coating in related technologies.

[0021] In the diagram, 1-anilox roller, 2-pressure roller, 3-scraper, 4-scraper glue storage tank, 5-collection tank, 6-guide roller, 7-homogenization device. Detailed Implementation

[0022] The following detailed description of preferred embodiments of the present invention, along with the included examples, will make the content of the present invention more readily understood. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In case of any conflict, the definitions in this specification shall prevail.

[0023] In existing technologies such as Figure 3As shown, the pressure roller 2 is above the anilox roller 1, and the doctor blade 3 is on one side of the anilox roller 1. The anilox roller 1 is inside the storage tank. As the anilox roller 1 rotates, it brings the adhesive liquid in the storage tank to the top and is pressed onto the film by the pressure roller 2. Then, the doctor blade 3 scrapes off the excess adhesive liquid. In existing coating methods, after prolonged use, the adhesive liquid will be in a turbulent state, generating a large number of air bubbles. This causes inconsistent solvent evaporation in the adhesive liquid, resulting in inconsistent viscosity and solids content, ultimately leading to poor uniformity of coating in certain areas.

[0024] Therefore, the following are provided: Figure 1-2 The illustrated anilox roller coating apparatus includes: an anilox roller 1 and a pressure roller 2. The pressure roller 2 presses the anilox roller onto the anilox roller 1. A doctor blade 3 is provided on the side of the anilox roller 1 away from the pressure roller 2. The anilox roller 1 and the pressure roller 2 are on the same horizontal plane. The anilox roller 1 has a uniformly distributed grid. The grid number of the anilox roller 1 ranges from 20 to 300 mesh. It also includes several guide rollers 6, which guide the movement of the anilox roller. A homogenizing device 7 is provided above the anilox roller 1. The homogenizing device 7 is a metal comma-shaped blade. The guide rollers 6 cause the film to move from bottom to top between the anilox roller 1 and the pressure roller 2, and the homogenizing device 7 is used to smooth the grid pattern on the coated film surface, making the coated surface smoother.

[0025] A doctor blade adhesive reservoir 4 is formed between the anilox roller 1 and the doctor blade 3. The doctor blade adhesive reservoir 4 contains adhesive. A collection tank 5 is located below the doctor blade adhesive reservoir 4. The film passes between the anilox roller 1 and the pressure roller 2. As the anilox roller 1 rotates, the adhesive liquid in the doctor blade adhesive reservoir 4 flows into the grid of the anilox roller 1 and rotates with it. The pressure roller 2 provides pressure to the film, pressing the adhesive to the film. Excess liquid overflows into the collection tank 5 after passing through both sides of the doctor blade 3, ensuring that the adhesive filling the anilox roller is always a fresh liquid with stable solid content and viscosity, guaranteeing uniform coating. In one embodiment, the doctor blade adhesive reservoir 4 is provided with graduation lines, and the adhesive is manually injected into the doctor blade adhesive reservoir 4 to ensure that the adhesive is within the appropriate range. In another embodiment, the adhesive in the scraper 3 storage tank is automatically dispensed and fed by a dispensing system according to the material volume in the scraper adhesive storage tank 4. The dispensing system is existing technology, and its specific structure and principle will not be described in detail here.

[0026] Working principle: The guide roller 6 drives the film to move, passing between the anilox roller 1 and the pressure roller 2. While the anilox roller 1 rotates, the adhesive liquid in the doctor blade's adhesive reservoir 4 flows into the grid of the anilox roller 1 and rotates with it. The pressure roller 2 provides pressure to the film, pressing the adhesive onto the film. After pressing, the film passes through a homogenizing device 7, which smooths the grid pattern on the coated surface, making the coated surface smoother and more mirror-like.

[0027] Example 1:

[0028] The adhesive in this embodiment is an organosilicon pressure-sensitive adhesive with a solid content of 40% and a viscosity of 800 cps.

[0029] The anilox roller 1 has a mesh count of 40.

[0030] The membrane is made of PET, with a thickness of 100μm and a width of 1400mm.

[0031] Visually inspecting the coated anilox roller reveals the following: the surface is glossy, without any grid pattern, and the adhesive is applied evenly.

[0032] The thickness test results are shown in the table below.

[0033] Length in meters Left middle right 10 108um 108um 108um 50 108um 108um 108um 100 108um 108um 108um

[0034] The left, middle, and right represent the thickness measured at three points on the anilox roller after coating, with the same length. Based on the thickness test results, it can be concluded that the coating effect is relatively uniform.

[0035] Example 2:

[0036] The adhesive in this embodiment is an acrylic pressure-sensitive adhesive with a solid content of 1% and a viscosity of 5 cps.

[0037] The anilox roller 1 has a mesh count of 60.

[0038] The membrane is made of PET, with a thickness of 100μm and a width of 1400mm.

[0039] Visually inspecting the coated anilox roller reveals the following: the surface is glossy, without any grid pattern, and the adhesive is applied evenly.

[0040] The thickness test results are shown in the table below.

[0041] Length in meters Left middle right 10 101um 101um 101um 50 101um 101um 101um 100 101um 101um 101um

[0042] The left, middle, and right represent the thickness measured at three points on the anilox roller after coating, with the same length. Based on the thickness test results, it can be concluded that the coating effect is relatively uniform.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A gravure roller coating equipment, characterized in that, It includes an anilox roller and a pressure roller, the pressure roller being used to press the film onto the anilox roller, and a doctor blade being provided on the side of the anilox roller away from the pressure roller; A scraper glue storage groove is formed between the anilox roller and the scraper. The adhesive storage tank of the scraper contains adhesive; A collection trough is provided below the glue storage tank of the scraper.

2. The anilox roller coating equipment according to claim 1, characterized in that, It also includes several guide rollers, which are used to guide the movement of the anilox roller.

3. The anilox roller coating equipment according to claim 2, characterized in that, A homogenizing device is provided above the anilox roller.

4. The anilox roller coating equipment according to claim 3, characterized in that, The homogenizing device is a metal comma knife.

5. The anilox roller coating equipment according to claim 1, characterized in that, The anilox roller and the pressure roller are on the same horizontal plane.

6. The anilox roller coating equipment according to claim 1, characterized in that, The anilox roller has a uniformly distributed grid.

7. The anilox roller coating equipment according to claim 6, characterized in that, The anilox roller has a mesh count ranging from 20 to 300 meshes.

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